Heavy duty mixer with 1-3/4″ diameter to fit through pour spout of 5-gallon containers. Mix drywall compound, driveway sealer, paint and more in 1 to 5-gallon containers. Welded steel with hexagonal shaft for positive chuck engagement. Electrostatic paint coating for easy cleanup and corrosion resistance. 1-3/4″ diameter, 3/8″x19″ shaft.